Locking fastener



FIG. 1 is a front perspective view of a locking fastener showing my new design;

FIG. 2 is a side elevational view of the male element shown separately for clarity of illustration, all sides being identical;

FIG. 3 is a top plan view of FIG. 2;

FIG. 4 is a bottom plan view of FIG. 2;

FIG. 5 is a perspective view of the female element, also shown separately for clarity of illustration;

FIG. 6 is a bottom plan view of FIG. 5, the top being identical;

FIG. 7 is a side elevational view of FIG. 5, all sides being identical;

FIG. 8 is a sectional view taken in the direction of the arrows on line 8--8 of FIG. 6;

FIG. 9 is a sectional view taken in the direction of the arrows on line 9--9 of FIG. 6;

FIG. 10 is a perspective view of a second embodiment of the design of FIG. 1, the only difference being the configuration of the female element;

FIG. 11 is a perspective view of the female element of FIG. 10, shown separately for clarity of illustration;

FIG. 12 is a bottom plan view of FIG. 11;

FIG. 13 is a top plan view of FIG. 11;

FIG. 14 is a side elevational view of FIG. 11, all sides being identical;

FIG. 15 is a sectional view taken in the direction of the arrows on line 15--15 of FIG. 12; and,

FIG. 16 is a sectional view taken in the direction of the arrows on line 16--16 of FIG. 12. 

The ornamental design for a locking fastener, as shown and described. 